From 1edc78050399e0e88f4ef8b59f66c649e4862b89 Mon Sep 17 00:00:00 2001
From: Luke Yelavich <luke.yelavich@canonical.com>
Date: Tue, 31 Jan 2012 18:32:11 +1100
Subject: When parsing an existing GTK menu hierarchy, we should also set the
 DBUSMENU_MENU_ITEM_ACCESSIBLE_DESC property, if the accessible name for the
 menu differs from the text of the menu item label.

---
 libdbusmenu-gtk/parser.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++
 libdbusmenu-gtk/parser.h |  1 +
 2 files changed, 54 insertions(+)

(limited to 'libdbusmenu-gtk')

diff --git a/libdbusmenu-gtk/parser.c b/libdbusmenu-gtk/parser.c
index 0ecfa1e..65a6b57 100644
--- a/libdbusmenu-gtk/parser.c
+++ b/libdbusmenu-gtk/parser.c
@@ -41,6 +41,7 @@ typedef struct _ParserData
   GtkWidget *widget;
   GtkWidget *shell;
   GtkWidget *image;
+  AtkObject *accessible;
 } ParserData;
 
 typedef struct _RecurseContext
@@ -67,6 +68,9 @@ static void           image_notify_cb          (GtkWidget *         widget,
 static void           action_notify_cb         (GtkAction *         action,
                                                 GParamSpec *        pspec,
                                                 gpointer            data);
+static void           a11y_name_notify_cb      (AtkObject *         accessible,
+                                                GParamSpec *        pspec,
+                                                gpointer            data);
 static void           item_inserted_cb         (GtkContainer *      menu,
                                                 GtkWidget *         widget,
 #ifdef HAVE_GTK3
@@ -200,6 +204,12 @@ parse_data_free (gpointer data)
 		g_object_remove_weak_pointer(G_OBJECT(pdata->image), (gpointer*)&pdata->image);
 	}
 
+        if (pdata != NULL && pdata->accessible != NULL) {
+                g_signal_handlers_disconnect_matched(pdata->accessible, (GSignalMatchType)G_SIGNAL_MATCH_FUNC,
+                                                     0, 0, NULL, G_CALLBACK(a11y_name_notify_cb), NULL);
+                g_object_remove_weak_pointer(G_OBJECT(pdata->accessible), (gpointer*)&pdata->accessible);
+        }
+
 	g_free(pdata);
 
 	return;
@@ -582,6 +592,27 @@ construct_dbusmenu_for_widget (GtkWidget * widget)
                             mi);
           g_object_add_weak_pointer(G_OBJECT (label), (gpointer*)&pdata->label);
 
+          AtkObject *accessible = gtk_widget_get_accessible (widget);
+          if (accessible)
+            {
+              // Getting the accessible name of the Atk object retrieves the text
+              // of the menu item label, unless the application has set an alternate
+              // accessible name.
+              const gchar * label_text = gtk_label_get_text (GTK_LABEL (label));
+              const gchar * a11y_name = atk_object_get_name (accessible);
+              if (g_strcmp0 (a11y_name, label_text))
+                dbusmenu_menuitem_property_set (mi, "accessible-desc", a11y_name);
+
+              // An application may set an alternate accessible name in the future,
+              // so we had better watch out for it.
+              pdata->accessible = accessible;
+              g_signal_connect (G_OBJECT (accessible),
+                                "accessible-name",
+                                G_CALLBACK (a11y_name_notify_cb),
+                                mi);
+              g_object_add_weak_pointer(G_OBJECT (accessible), (gpointer*)&pdata->accessible);
+            }
+
           if (GTK_IS_ACTIVATABLE (widget))
             {
               GtkActivatable *activatable = GTK_ACTIVATABLE (widget);
@@ -947,6 +978,28 @@ action_notify_cb (GtkAction  *action,
     }
 }
 
+static void
+a11y_name_notify_cb (AtkObject  *accessible,
+                     GParamSpec *pspec,
+                     gpointer    data)
+{
+  DbusmenuMenuitem *item = (DbusmenuMenuitem *)data;
+  GtkWidget *widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
+  GtkWidget *label = find_menu_label (widget);
+  const gchar *label_text = gtk_label_get_text (GTK_LABEL (label));
+  const gchar *name = atk_object_get_name (accessible);
+
+  /* If an application sets the accessible name to NULL, then a subsequent
+   * call to get the accessible name from the Atk object should return the same
+   * string as the text of the menu item label, in which case, we want to clear
+   * the accessible description property of the dbusmenu item.
+   */
+  if (!g_strcmp0 (name, label_text))
+    dbusmenu_menuitem_property_set (item, "accessible-desc", NULL);
+  else
+    dbusmenu_menuitem_property_set (item, "accessible-desc", name);
+}
+
 static void
 item_activated (DbusmenuMenuitem *item, guint timestamp, gpointer user_data)
 {
diff --git a/libdbusmenu-gtk/parser.h b/libdbusmenu-gtk/parser.h
index 97fa9c6..191a8ac 100644
--- a/libdbusmenu-gtk/parser.h
+++ b/libdbusmenu-gtk/parser.h
@@ -31,6 +31,7 @@ License version 3 and version 2.1 along with this program.  If not, see
 
 #include <libdbusmenu-glib/menuitem.h>
 #include <gtk/gtk.h>
+#include <atk/atk.h>
 
 G_BEGIN_DECLS
 
-- 
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